本文整理汇总了Python中subscription.models.Subscription.exists方法的典型用法代码示例。如果您正苦于以下问题：Python Subscription.exists方法的具体用法？Python Subscription.exists怎么用？Python Subscription.exists使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类subscription.models.Subscription的用法示例。
在下文中一共展示了Subscription.exists方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: post
# 需要导入模块: from subscription.models import Subscription [as 别名]
# 或者: from subscription.models.Subscription import exists [as 别名]
def post(self, request, *args, **kwargs):
list_id = kwargs.get('list_id', None)
email = request.POST.get('email', None)
name = request.POST.get('name', None)
action = request.POST.get('action', None)
channel = request.POST.get('channel', 'general')
valid = True
message = ''
if not (action and list_id):
valid = False
message = _(u'Incomplete form')
try:
validate_email(email)
except forms.ValidationError as e:
valid = False
message = u'Invalid e-mail address'
if valid:
newsletter = Newsletter.objects.get(id=list_id)
subscription = Subscription.objects.filter(newsletter=newsletter, email=email.strip())
if action == 'subscribe':
if subscription.exists() and not subscription[0].opted_out:
message = u'You are already subscribed to this newsletter'
elif subscription.exists():
subscription[0].opted_out = None
subscription[0].save()
subscription[0].subscribe()
message = u'Subscription updated'
else:
subscription = Subscription(
newsletter=newsletter,
email=email,
name=name,
language=get_language()[0:2],
channel=channel
)
subscription.save()
subscription.update_subscription()
message = u'You\'ve successfully signed-up for the newsletter. Soon you will receive an email to confirm your subscription.'
if action == 'unsubscribe':
if subscription.exists():
subscription[0].opted_out = False
subscription[0].save()
subscription[0].unsubscribe()
return self.render_json_response(
{
'success': valid,
'message': message,
})